20011301211 has 16 divisors (see below), whose sum is σ = 29117190528. Its totient is φ = 12123960000.

The previous prime is 20011301207. The next prime is 20011301231. The reversal of 20011301211 is 11210311002.

It is not a de Polignac number, because 20011301211 - 2² = 20011301207 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20011301231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2001 + ... + 200066.

It is an arithmetic number, because the mean of its divisors is an integer number (1819824408).

Almost surely, 2^20011301211 is an apocalyptic number.

20011301211 is a deficient number, since it is larger than the sum of its proper divisors (9105889317).

20011301211 is a wasteful number, since it uses less digits than its factorization.

20011301211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205082.

The product of its (nonzero) digits is 12, while the sum is 12.

Adding to 20011301211 its reverse (11210311002), we get a palindrome (31221612213).

The spelling of 20011301211 in words is "twenty billion, eleven million, three hundred one thousand, two hundred eleven".